aes

Documentation

Overview

This package implements AES encryption (formerly Rijndael), as defined in U.S. Federal Information Processing Standards Publication 197.

Index

• Constants
• type Cipher
  • func NewCipher(key []byte) (*Cipher, os.Error)
  • func (c *Cipher) BlockSize() int
  • func (c *Cipher) Decrypt(src, dst []byte)
  • func (c *Cipher) Encrypt(src, dst []byte)
  • func (c *Cipher) Reset()
• type KeySizeError
  • func (k KeySizeError) String() string

Constants

const BlockSize = 16

The AES block size in bytes.

Types

type Cipher

type Cipher struct {
	// contains filtered or unexported fields
}

A Cipher is an instance of AES encryption using a particular key.

func NewCipher

func NewCipher(key []byte) (*Cipher, os.Error)

NewCipher creates and returns a new Cipher. The key argument should be the AES key, either 16, 24, or 32 bytes to select AES-128, AES-192, or AES-256.

func (*Cipher) BlockSize

func (c *Cipher) BlockSize() int

BlockSize returns the AES block size, 16 bytes. It is necessary to satisfy the Cipher interface in the package "crypto/block".

func (*Cipher) Decrypt

func (c *Cipher) Decrypt(src, dst []byte)

Decrypt decrypts the 16-byte buffer src using the key k and stores the result in dst.

func (*Cipher) Encrypt

func (c *Cipher) Encrypt(src, dst []byte)

Encrypt encrypts the 16-byte buffer src using the key k and stores the result in dst. Note that for amounts of data larger than a block, it is not safe to just call Encrypt on successive blocks; instead, use an encryption mode like CBC (see crypto/block/cbc.go).

func (*Cipher) Reset

func (c *Cipher) Reset()

Reset zeros the key data, so that it will no longer appear in the process's memory.

type KeySizeError

type KeySizeError int

func (KeySizeError) String

func (k KeySizeError) String() string